CVE-2021-39686

Published on: Not Yet Published

Last Modified on: 07/12/2022 05:42:00 PM UTC

CVE-2021-39686

CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

Certain versions of Android from Google contain the following vulnerability:

In several functions of binder.c, there is a possible way to represent the wrong domain to SELinux due to a race condition. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android kernelAndroid ID: A-200688826References: Upstream kernel

CVE-2021-39686 has been assigned by [email protected] to track the vulnerability - currently rated as HIGH severity.

CVSS3 Score: 7 - HIGH

Attack Vector ^ⓘ	Attack Complexity	Privileges Required	User Interaction
LOCAL	HIGH	LOW	NONE
Scope	Confidentiality Impact	Integrity Impact	Availability Impact
UNCHANGED	HIGH	HIGH	HIGH

CVSS2 Score: 6.9 - MEDIUM

Access Vector^ⓘ	Access Complexity	Authentication
LOCAL	MEDIUM	NONE
Confidentiality Impact	Integrity Impact	Availability Impact
COMPLETE	COMPLETE	COMPLETE

CVE References

Description	Tags ^ⓘ	Link
Android Security Bulletin—March 2022 \| Android Open Source Project	source.android.com text/html	MISC source.android.com/security/bulletin/2022-03-01

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Related QID Numbers

179117 Debian Security Update for linux (DSA 5096-1)
179118 Debian Security Update for linux (DLA 2940-1)
179119 Debian Security Update for linux-4.19 (DLA 2941-1)
610401 Google Android Devices March 2022 Security Patch Missing
610408 Google Android April 2022 Security Patch Missing for Huawei EMUI
610409 Google Android April 2022 Security Patch Missing for Samsung
672017 EulerOS Security Update for kernel (EulerOS-SA-2022-2244)
672037 EulerOS Security Update for kernel (EulerOS-SA-2022-2257)

Known Affected Configurations (CPE V2.3)

Type	Vendor	Product	Version	Update	Edition	Language
Operating System	Google	Android	-	All	All	All

cpe:2.3:o:google:android:-:*:*:*:*:*:*:*:

No vendor comments have been submitted for this CVE

Social Mentions

Source	Title	Posted (UTC)
@softek_jp	Linux Kernel の Android バインダードライバの処理に特権を奪われる問題 (CVE-2021-39686) [41587] sid.softek.jp/content/show/4… #SIDfm #脆弱性情報	2022-03-14 06:30:04
@CVEreport	cve.report/CVE-2021-39686 In several functions of binder.c, there is a possible way to represent the wrong domain to… twitter.com/i/web/status/1…	2022-03-16 16:20:40
/r/k12cybersecurity	MS-ISAC CYBERSECURITY ADVISORY - Multiple Vulnerabilities in Google Android OS and Pixel Could Allow for Remote Code Execution - PATCH: NOW	2022-03-08 22:01:38
/r/netcve	CVE-2021-39686	2022-03-16 17:38:45
/r/GalaxyS22	Samsung April 2022 Security Patch Details	2022-04-05 06:51:02